Shower drain



April 5, 1955 M v H 2,705,542

SHOWER DRAIN Filed Aug. 7, 1950 2 She ts-Sheet 1 III INVENTOR: Morr'wYeti/115070,

ATTORNE).

yam/m 2 Sheets-Sheet 2 M. YAVITCH SHOWER DRAIN INVENTUR. MorrisYell/itch,

April 5, 1955 Filed Aug. 7, 1950 A T TOR/VEY.

United States Patent O SHOWER DRAIN Morris Yavitch, Los Angeles, Calif.

Application August 7, 1950, Serial No. 178,099

2 Claims. (Cl. 182-1) This invention relates to shower drains for bathcabinets and the like, and the invention is an improvement on my ShowerDrain disclosed in my application for Letters Patent, Ser. No. 626,662,filed November 5, 1945, now abandoned.

The general object of the invention is to provide an improved showerdrain of the character as above stated, in which the test pipe isthreaded in the drain inlet receptacle, and in which either a threadjoint of a caulk joint is provided for connection of the outlet nippleto a drain pipe.

Other objects and advantages will appear hereinafter as thisspecification progresses.

The invention is illustrated in the annexed drawings, which form a partof this specification and in which:

Fig. 1 is a vertical longitudinal section of my invention taken on line1-1 of Fig. 2, shown installed in a shower bath cabinet.

Fig. 2 is a top plan view of my invention.

Fig. 3 is a top plan view of my invention with the grill removed.

Fig. 4 is a vertical longitudinal section of my shower drain taken online 4-4 of Fig. 3, with a test pipe threaded into the upper memberthereof and a collar on said test pipe resting upon the upper end ofsaid upper member for testing my shower drain.

Fig. 5 is a vertical longitudinal section like Fig. 4 of a modificationof my invention.

Referring more particularly to the drawings, in which the same parts aredesignated my the same reference numerals in all of the figures, myshower drain includes generally a lower drain member 1 and an upperdrain member 2.

In the form shown in Figures 1 and 4, said lower drain member 1 isformed with a slightly inclined conical funnel-shaped base wall 3provided with a central outlet opening 4 and formed with a drain outletnipple 5 depending centrally from said base wall in communication withsaid outlet opening 4, there being an annular rabbet 6 in the upper edgeof said outlet opening 4. In said base wall 3 are formed a plurality,preferably three, sockets 7, open at the upper side of said base wall 3and internally threaded as at 8, which sockets are spaced equidistantapart around said base wall. The outlet nipple 5 is provided with aninternal thread 9.

The upper drain member 2 comprises a vertical cylindrical drainreceptacle 10 formed at its lower end with an upwardly inclined externaland internal conical annular base 11, the outer external portion ofwhich base forming an external annular clamp 12, and the internalportion of which base forming a narrow, annular bottom wall 13 in saiddrain receptacle 10, there being a central opening 14, through saidbottom wall 13 formed with an internal thread 15 for the purposehereinafter more fully described. The lower side 16 of said annular base11 is inclined at the same angle as the upper side 17 of the base wall 3of the lower drain member 1 to fit closely within said conical basewall. From the lower side of the annular conical base 11 depends anannular boss 18 coaxial with the opening 14 in said base 11 and with itscentral opening forming the lower part of said opening 14 in said base11, the thread 15 in said base 11 extending downwardly through said boss18. Said annular boss 18 of said upper drain member 2 fits in theannular rabbet 6 in the base wall 3 of the lower drain member when thebase 11 of the upper drain member 2 is fitted in the base wall 3 of thelower drain member 1. A plurality of 2,705,542 Patented Apr. 5, 1955weep holes 19, preferably three, are provided in the lower end of thecylindrical wall 20 of the drain receptacle 10, adjacent the upper sideof the annular base 11 of said receptacle, said weep holes being spacedequidistant apart around said cylindrical wall of said. drainreceptacle. The upper end of the cylindrical wall of the inletreceptacle 10 is formed with an internal annular rabbet 21 in its innerside, in which rabbet a grill 22 is detachably fitted and is normallysecured by countersunk screws 23 extending downwardly through screwopenings 24 in said grill and threaded in bosses 25 formed at the upperend of the wall of said receptacle on the inner side of said wall. Theexternal portion of the annular base 11 of the upper drain receptacle 2provides the external annular clamp 12, which is provided with aplurality of bolt openings 26, preferably three, adapted to registerwith the three threaded bolt. sockets 7 depending from the base wall 3of the lower drain member 1, when the upper drain member 2 is placedabove and within said lower drain member, which bolt openings 26 andthreaded sockets 7 are adapted to receive bolts 27 in the manner and forthe purpose hereinafter more fully described. The drain receptacle 10 issubstantially larger in diameter than the drain outlet nipple 5 of thelower drain member 1.

The grill 22 may be provided with drain outlets 28 of any suitable formand arrangement, such as shown in Fig. 2 of the drawings, in which saidoutlets 28 are in the form of parallel slots, which extend outwardlyfrom a diametrical narrow portion 29 of the grill 22 to points near theouter circular edge 30 of the grill, said diametrical portion 29extending diametrically of the grill between the screw openings 24 andthe screws 23.

A test pipe 31 is employed for testing my shower drain in the mannerhereinafter more fully described. On said test pipe is slidably fitted afiat collar 32, and on the lower end of said test pipe is formed anexternal thread 33 for engaging the thread 15 in the central opening 14in the base 11 of the upper drain member 2. On the upper end of saidtest pipe 31 a cap 34 may be threaded for preventing dirt or othermaterial entering said test pipe.

My shower drain may be installed in a bath cabinet 35 as follows:

An opening 36 is cut in the floor 37 of the room in which said bathcabinet 35 is constructed, and the conical base wall 3 of the lowerdrain member 1 is fitted in said opening 36, with the upper and outeredge of said base wall 3 adjacent the edge of said opening and flushwith the upper side of said floor 37, so that said base wall and theoutlet nipple 5 of said lower drain member I extend downwardly from saidfloor 37. The outlet nipple 5 is threaded on the upper threaded end of adrain pipe 38, with the thread 9 in said nipple engaging a thread 39 onsaid end of said drain pipe. A shower pan 40 of lead, copper or papercoated with tar, provided with a central opening 41 in its bottom wall42, is placed in the bath cabinet 35 with said bottom wall upon thefloor 37 and over the outer portion of the annular base 3 of the lowerdrain member 1, with the center of said opening 41 in said bottom wall42 coinciding with the center of the drain member 1, and with the sidewall 43 of said shower pan 40 fitted against the inner side of thevertical wall 44 of the bath cabinet 35. The upper drain member 2 isplaced over the lower drain member 1 with the annular clamp 12 at theouter portion of the annular base 11 resting upon the bottom wall 42 ofthe shower pan 40 over the edge of the opening 41 in said bottom wall,and with the bolt holes 26 in said annular base 11 of the upper drainmember 2 coinciding with the threaded sockets 7, respectively, in basewall 3 of the lower drain member 1. The bolts 27 are then introduceddownwardly through the bolt holes 26 in the base 11 of the upper drainmember 2 to the upper ends of the threaded sockets 7 of the lower drainmember 1, and, upon applying a Wrench to the heads 45 of said bolts andturning said bolts to the right, said bolts engage the threads 8 of thesockets 7 while said bolt heads 45 engage the upper side of the annularbase 11 of the upper drain member 3 and drawn down said upper drainmember, whereby the annular clamp 12 engages the inner annular portionof the bottom wall 42 of the shower pan 40 over the edge of the opening41 in said bottom wall and clamps said inner edge portion of said bottomwall tightly between said clamp 12 and the base'wall 3 of the lowerdrain member 1, and detachably secures the upper drain member 1 to thelower drain member 2 in position for use with the conical base 11 of theupper drain member 2 fitting closely within the conical base wall 3 ofthe lower drain member 1. The grill 22 is then fitted in the rabbet 21in the upper end of the drain receptacle of the drain member and saidgrill is detachably secured in said rabbet 21 by the screws 23 driventhrough the countersunk openings 24 in said grill into the threadedbosses 25 in the upper end of said drain receptacle 10.

For testing my shower drain for leaks the operation of my invention isas follows:

The grill screws 23 are first turned by a screw driver and unscrewedfrom the bosses 25, and the grill 22 is removed from the rabbet 21 andthe upper end of the drain receptacle 10 of the upper drain member 2.The test pipe 31 is then introduced into the drain receptacle 10 throughthe open upper end thereof, and the lower threaded end of said test pipeis threaded into the threaded opening 14 in the center of the bottom 13of said drain receptacle 10 of the upper drain member 2, with theexternal thread 33 on the lower end of said test pipe 31 in threadedengagement with the internal thread in said opening 14, and with thelower end of said test pipe adjacent the upper end of the drain pipe 38.The fiat collar 32 is then moved down on said te'st pipe 31 upon theupper end of said drain receptacle 10 into the rabbet 21, closing saidreceptacle at its upper end around said test pipe. Water is thenintroduced into the shower pan 40, from which part of said water flowsthrough the weep holes 19 into the bottom of the drain receptacle 10until the water fills said drain receptacle around the test pipe 31 andfills said shower pan 40 up to a suitable level 46 above the upper endof said drain receptacle 10, as shown in Fig. 4 of the drawings, thelower end of the test tube 31, threaded into the bottom opening 14. ofsaid drain receptacle, preventing the water from flowing out of thebottom of said drain receptacle 10 through the drain nipple 5 and drainpipe 38. If there is a leak in the shower drain the water flowingthrough said leak will indicate its location under the bath cabnet 35,and upon unscrewing the lower threaded end of the test pipe 31 from thethreaded opening 14 in the bottom 13 of the drain receptacle 10 andremoving said test pipe from said opening 14, the water will fiow out ofthe shower pan 40 through the weep holes 19 into the lower end of the Idrain receptacle 10 and out of the drain receptacle through the opening14 in the bottom of said receptacle and out through the drain pipe 38.The leak or leaks are then repaired, and my shower drain may again betested and leaks, if any, repaired, until there are no leaks in thedrain.

When by shower drain, after being tested one or more times, contains noleak, the shower pan 40 is filled with concrete 47 up to the level ofthe upper end of the drain receptacle 8 and the upper surface of thegrill 22 and the upper surface 48 of said concrete forms the floor ofthe bath cabinet 35. The test pipe 31 is also positioned in the drainreceptacle 10, with its lower threaded end screwed into the threadedopening 14 in the bottom of said receptacle, and the collar 32 is moveddown on said pipe upon the upper end of the drain inlet receptacle 10,when the concrete is poured in the shower pan 40, to prevent any of saidconcrete, dirt or other things from entering said drain receptacle 10and drain pipe 38. When the concrete work is done, the test pipe isunscrewed at its lower end from the threaded opening 14 in the bottom ofthe drain receptacle 10, and said test pipe is removed from saidreceptacle, whereupon the grill 22 is placed in the rabbet 21 in theupper end of the drain receptacle and secured in such position by thescrews 23, driven through the screw openings 24 in said grill into thebosses in the upper end of the drain receptacle 10, with the uppersurface of said grill flush with the upper surface 48 of the concrete47.

In the use of the bath cabinet 35 with my shower drain, water from theshower nozzle in said cabinet falling upon the surface 48 of theconcrete floor 47 and the grill 22 is drained out of said cabinetthrough the grill openings 28, drain receptacle 10 and its opening 14 inthe bottom thereof, and out through the drain pipe 38.

My invention provides for a more practical, effective and satisfactorytest for leakage than other shower drains known to applicant.

In the modification of my invention shown in Fig. 5 of the drawings, theconstruction and operation are the same as shown in Figs. 1 to 4,inclusive, of my invention, except that the thread 9 in the outletnipple 5 of Figs. 1 and 4 is eliminated and an annular pocket 50 isformed in the inner side of said outlet nipple 5 with an inwardlydirected wall 51 formed on the lower end of the cylindrical pocket wall52, closing the lower end of said pocket 50 and leaving the upper end ofsaid pocket open at 53. A drain pipe 54 is introduced upwardly into theoutlet nipple 5 with the outer surface of said pipe engaging the inneredge of the inwardly directed wall 51 of the pocket 50, in which pocketcaulking material 55 is introduced, and packed with oakum and caulkedwith lead therein through the upper end thereof, whereby the upper endportion of said drain pipe is caulked watertight in said outlet drainnipple 5, and said pipe is prevented by said caulking material, fromleaking and pulling out of said outlet drain nipple.

I claim:

1. In combination, a lower drain member including a funnel-shape basewall formed with a central depending drain outlet nipple to which adrain pipe may be connected, a shower pan provided with a centralopening, said shower pan' being placed upon said base wall with its saidopening coinciding centrally with said outlet nipple, an upper drainmember formed at its lower end with an annular external and internalbase, and with a drain inlet receptacle upstanding from said annularbase, the external portion of said base forming an external annularclamp, the lower side of said base being of inverted conical shape, saiddrain receptacle being substantially larger in diameter than said drainoutlet nipple of said lower drain member, said upper drain member beingplaced with the external portion of its annular base resting upon thebottom wall of said shower pan around the edge of the opening in saidshower pan, means for bolting said annular base of said upper drainmember and said bottom wall of said shower pan to the funnel-shaped basewall of said lower drain member externally of said drain inletreceptacle, said drain inlet receptacle being provided with weep holesin its lower end above said annular base of said upper drain member,said annular base of said upper drain member being provided with aninternal thread in its central opening, a removable test pipe externallythreaded at its lower end, to be extended through said drain inletreceptacle and its said lower end threaded into the internal thread insaid central opening in said annular base of said upper drain member.

2. A shower drain as claimed in claim 1 in which the base wall of thelower drain member is provided with an annular rabbet and the base ofthe upper drain memher is formed with an annular boss surrounding itsoutlet, which boss is adapted to seat in said rabbet of said lower drainmember.

References Cited in the file of this patent UNITED STATES PATENTS1,676,430 Delany July 10, 1928 1,766,621 Fleming June 24, 1930 1,900,658Niedccken Mar. 7, 1933 1,914,780 Lichamer June 20, 1933 2,127,167Fraters Aug. 16, 1938 2,222,807 Burr Nov. 26, 1940 2,299,705 SvirskyOct. 20, 1942 2,400,070 Boosey May 14, 1946

